Question: Maple 2016 installation hangs on silent installation with systemaccount

environment
- Windows 10 LTSB 64-bit
- Intel Haswell/Skylake

sequence:
1. install Windows unattended
2. install scheduletask for software installation (runs with systemaccount on windows starts and available network)
3. task runs a cmdfile(1) that map a networkshare and runs another cmdfile(2) on the networkshare
4. cmdfile(2) runs softwareinstallation one by one, every install is a seperate cmdfile
5. cmfile(maple.cmd) starts maple installation with the following cmdline
-->
START "Maple 2016" /WAIT "N:\Math\Maple\Maple2016Windowsx86Installer.exe" --mode unattended --desktopshortcut 0 --shortcutname "Maple 2016" --configureMatlab 0 --matlabpath "" --licenseType network --serverName "licserver.company.domain" --portnumber 27000
<--

Note: licenseserver and port are configured correctly, tested with manual installation of Maple

effects:
- installer starts and install some files (found unter C:\ProgramFiles\Maple 2016)
- installer persists in memory 
- no startmenuentry for maple found
- no installler logfile in maple directory found
- install not finished

- try it with --optionfile ... -> hangs
- try copying all files to local harddisk and run it from there -> hangs
- try it running with a local administrator (using psexec) -> hangs

- if im logged in and run the installer cmdline manually with adminconsole or with systemaccount (psexec -i -s -d cmd) the installation runs perfect, but this is not what i need to install hundreds of machines